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POLYJACKING.CAA HAUSE site / Canada

Process

What happens during a polyjacking job

Every site is different, but a careful polyjacking job generally follows the same sequence.

Conceptual section showing a settled concrete slab over a voidA blue-grey dashed datum marks the adjoining slab height. The central concrete panel sits lower above a void in the sub-base. Orange arrows indicate the potential lift direction; injection is considered only after assessing the slab and cause.FIG. 01 / SUBSURFACE SECTIONN.T.S.REFERENCE DATUM ─ 0001 / ADJACENT SLAB02 / SETTLED PANEL03 / SUB-BASE + SOIL04 / VOIDASSESS CAUSE BEFORE LIFTINGSECTION A—A
01 / Adjacent slab02 / Settled panel03 / Sub-base and soil04 / Void under panel
Conceptual illustration / not to scale / not a real project

1. Assessment

The contractor looks at the slab’s condition, measures settlement, and identifies likely causes — drainage, loose fill, leaks.

2. Locates and planning

Buried utilities, drains and plumbing should be located before drilling. The injection pattern is planned.

3. Drilling

Small holes are drilled through the slab at planned points.

4. Staged injection

Foam is injected in controlled increments while the slab position is monitored, often with levels or lasers, to avoid over-lifting.

5. Patching and sealing

Holes are patched. Joints and cracks are often sealed to limit water entry.

6. Addressing the cause

Downspout extensions, grading corrections or other drainage fixes help prevent recurrence. These may be done by the homeowner or another trade.

How long does it take?

Duration depends on the size and number of slabs, access and the product used. Return-to-use also depends on the product and conditions — ask your contractor.

Next step: an assessment

Photos help, but the only reliable way to decide whether a slab can be lifted is an on-site look at the concrete, the drainage and the likely cause of settlement. Submit a request and the HAUSE intake team will review it and confirm whether a suitable contractor is available in your area.

Conceptual illustration

From request to follow-up

How a PolyJacking.ca request moves from your description to a contractor’s assessment.

  1. 1

    You describe it

    Tell us about the slab, location and timing. Photos are optional.

  2. 2

    HAUSE reviews

    The intake team reads your request and checks availability in your area.

  3. 3

    Contractor assesses

    If a suitable contractor or partner is available, they arrange a site look.

  4. 4

    You decide

    The contractor explains options and quotes. There’s no obligation.

Text version
  1. You describe it: Tell us about the slab, location and timing. Photos are optional.
  2. HAUSE reviews: The intake team reads your request and checks availability in your area.
  3. Contractor assesses: If a suitable contractor or partner is available, they arrange a site look.
  4. You decide: The contractor explains options and quotes. There’s no obligation.
Conceptual illustration · © PolyJacking.ca · HAUSE. Not to scale; not a photo of real work.

More in the visual guides · try the slab self-check.

Have a settled slab?

Describe it, add photos if you have them, and the HAUSE intake team will review your request and confirm whether a suitable contractor is available near you.

Request an assessment
Request assessment